Sherwood RX-4109B/B, Руководство по обслуживанию

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Symptom
Remote Controller Failure. A) Battery check.
B) RMC I.C inferior.
1. RMC IC B+( 5 )V check. REM401
2. RMC clock pulse check. IC301 ( 4 )
FM Failure. A) FM MUTE adjustment inferior.
B) FRONT-END inferior.
C) FM DET COIL inferior.
D)TUNER PACK check PACK401(MAIN)
1.TUNER PACK +12V check Pin#4
2.PLL control data check (DATA/CE/Clock) Pin#5,6,7,8,9
E) TUNER B+ voltage inferior
F) u-COM IC IC301(MAIN)
1.u-COM IC 5V check I.C Pin No.( 12 )
2. u-COM control DATA check I.C Pin No.( 20, 24, 25, 26 )
Stereo Effect Failure. A) FM DET COIL Inferior.
Stereo does not light up. B)TUNER PACK check PACK401(MAIN)
1.TUNER PACK +12V check Pin#4
2.PLL control data check (DATA/CE/Clock) Pin#5,6,7,8,9
C) STEREO adjustment inferior.
D) FM MUTE adjustment inferior.
AM Failure. A) AM V.T voltage inferior. AM OSC ( BLACK COIL )
B)TUNER PACK check PACK401(MAIN)
1.TUNER PACK +12V check Pin#4
2.PLL control data check (DATA/CE/Clock) Pin#5,6,7,8,9
C)TUNER B+ voltage inferior
D)AM OSC COIL inferior
E) u-COM IC IC301(MAIN)
1.u-COM IC 5V check I.C Pin No.( 12 )
2. u-COM control DATA check I.C Pin No.( 20, 24, 25, 26 )
Tuner Sound Dead. A) Connector's disconnection or disjuction.
1. L / R Channel dead. Change or Close insertion of the connector.
2. LEFT Channel dead. B) AM/FM IF IC check
3. RIGHT Channel dead. 1.Signal IN/OUT terminal
2.IC driving voltage check (+12)
C) FM DET COIL inferior.
D) AM IFT COIL inferior.
E)TUNER PACK check PACK401(MAIN)
1.TUNER PACK +12V check Pin#4
2.PLL control data check (DATA/CE/Clock) Pin#5,6,7,8,9
Cause and Remedy Ref NO.